“if he did not posess the sinfull nature of fallen man he would not have been able to defeat Satan.”
Whew. You jumped the shark. Okay, then we don’t have much in common. You believe in a Christianity I do not recognize. “Like unto us in all things but sin” (sin is not natural but unnatural to us), is the way I thought the Scripture read. Maybe you read a different Bible.
““Like unto us in all things but sin””
That quote is not in the Bible but it is in “The Christian Faith 2001:227” which is a Catholic teaching.
The without sin part means that he did not sin (was able to resist sin) as is tought in the Bible. If he had truly been “without sin” in the sense that he was without a sinful nature he would not have been “truly man”.